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THAO P PHUNG MD INC
NPI 1043792112
Internal Medicine in Fountain Valley, CA

Active since September 05, 2018
18035 BROOKHURST ST, FOUNTAIN VALLEY, CA 92708(310) 483-6256(562) 232-3728 Get Directions Write a Review

NPPES record last updated: August 31, 2023. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Aug 31, 2023, Oct 11, 2018, Sep 5, 2018 (3 updates tracked since 2018).

About Thao P Phung Md Inc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

THAO P PHUNG MD INC (NPI 1043792112) is a healthcare organization registered as an internal medicine in Fountain Valley, California and active in the NPI registry since September 2018. The organization maintains 2 additional practice locations and lists Thao Phung, President, as its authorized official.

NPPES Registry Identity

NPI1043792112
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameTHAO P PHUNG MD INC
Location Address18035 BROOKHURST STFountain Valley, CA 92708-6738
Mailing Address2913 El Camino Real Ste 316Tustin, CA 92782-8909 · (949) 229-1153 · Fax (657) 245-3168
Phone(310) 483-6256
Fax(562) 232-3728
Organization SubpartNo
Authorized OfficialThao PhungPresident · (310) 483-6256
Enumeration DateSeptember 5, 2018
Last NPPES UpdateAugust 31, 20233 updates tracked since enumeration
NPPES CertifiedAugust 31, 2023
✔ NPI 1043792112 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A125932
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
18035 BROOKHURST ST, Fountain Valley, CA 92708
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Secondary Practice Locations 2

Location 12913 El Camino Real Ste 316Tustin, CA 92782-8909 · Phone (949) 229-1153 · Fax (657) 245-3168
Location 217100 Euclid StFountain Valley, CA 92708-4004 · Phone (310) 483-6256 · Fax (562) 232-3728

Other Identifiers 1

MedicaidA125932CA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Thao P Phung Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Thao P Phung MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Thao Phung, MD
Hospitalist
NPI 1699909622
2913 EL CAMINO REAL STE 316
Tustin, CA 92782
(949) 229-1153
✔ PECOS✔ Accepts Medicare9.4 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Thao P Phung MD Inc's NPI number?

The NPI number for Thao P Phung MD Inc is 1043792112. It was assigned to this organization in the NPPES registry on September 5, 2018.

Where is Thao P Phung MD Inc located?

Thao P Phung MD Inc is located at 18035 Brookhurst St, Fountain Valley, CA 92708. The listed phone number is (310) 483-6256.

What is Thao P Phung MD Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Thao P Phung MD Inc enrolled in Medicare?

Yes. Thao P Phung MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Thao P Phung MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Hospitalist) reassigns their Medicare billing to Thao P Phung MD Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Thao P Phung MD Inc was last updated on August 31, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.